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        Module&nbsp;prestoclient
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<h1 class="epydoc">Source Code for <a href="prestoclient-module.html">Module prestoclient</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment">#!/usr/bin/env python</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-docstring">""" PrestoClient provides a method to communicate with a Presto server. Presto is a fast query</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-docstring">    engine developed by Facebook that runs distributed queries against Hadoop HDFS servers.</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-docstring">    Copyright 2013-2014 Ivo Herweijer | easydatawarehousing.com</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-docstring">    Licensed under the Apache License, Version 2.0 (the "License");</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-docstring">    you may not use this file except in compliance with the License.</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-docstring">    You may obtain a copy of the License at:</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-docstring">    http://www.apache.org/licenses/LICENSE-2.0</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt class="py-docstring">    Unless required by applicable law or agreed to in writing, software</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"><tt class="py-docstring">    distributed under the License is distributed on an "AS IS" BASIS,</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"><tt class="py-docstring">    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"><tt class="py-docstring">    See the License for the specific language governing permissions and</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line"><tt class="py-docstring">    limitations under the License.</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line"> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">httplib</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">socket</tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">urllib2</tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">json</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">getpass</tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">time</tt> <tt class="py-keyword">import</tt> <tt class="py-name">sleep</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line"> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient"></a><div id="PrestoClient-def"><a name="L29"></a><tt class="py-lineno"> 29</tt> <a class="py-toggle" href="#" id="PrestoClient-toggle" onclick="return toggle('PrestoClient');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html">PrestoClient</a><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="PrestoClient-expanded"><a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line"><tt class="py-docstring">    PrestoClient</tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line"><tt class="py-docstring">    ============</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line"><tt class="py-docstring">    PrestoClient implements a Python class to communicate with a Presto server.</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line"><tt class="py-docstring">    Presto (U{http://prestodb.io/}) is a fast query engine developed</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"><tt class="py-docstring">    by Facebook that runs distributed queries against a (cluster of)</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line"><tt class="py-docstring">    Hadoop HDFS servers (U{http://hadoop.apache.org/}).</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line"><tt class="py-docstring">    Presto uses SQL as its query language. Presto is an alternative for</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line"><tt class="py-docstring">    Hadoop-Hive.</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line"><tt class="py-docstring">    PrestoClient was developed and tested on Presto versions 0.52 to 0.68. Python version used is 2.7.6</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line"><tt class="py-docstring">    You can use this class with this sample code:</tt> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; import prestoclient</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; sql = "SHOW TABLES"</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; # Replace localhost with ip address or dns name of the Presto server running the discovery service</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; presto = prestoclient.PrestoClient("localhost")</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; if not presto.runquery(sql):</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;     print "Error: ", presto.getlasterrormessage()</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt; else:</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;     # We're done now, so let's show the results</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;     print "Columns: ", presto.getcolumns()</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line"><tt class="py-docstring">    &gt;&gt;&gt;     if presto.getdata(): print "Datalength: ", presto.getnumberofdatarows(), " Data: ", presto.getdata()</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line"><tt class="py-docstring">    Presto client protocol</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line"><tt class="py-docstring">    ======================</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line"><tt class="py-docstring">    The communication protocol used between Presto clients and servers is not documented yet. It seems to</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line"><tt class="py-docstring">    be as follows:</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line"><tt class="py-docstring">    Client sends http POST request to the Presto server, page: "/v1/statement". Header information should</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line"><tt class="py-docstring">    include: X-Presto-Catalog, X-Presto-Source, X-Presto-Schema, User-Agent, X-Presto-User. The body of the</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line"><tt class="py-docstring">    request should contain the sql statement. The server responds by returning JSON data (http status-code 200).</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line"><tt class="py-docstring">    This reply may contain up to 3 uri's. One giving the link to get more information about the query execution</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line"><tt class="py-docstring">    ('infoUri'), another giving the link to fetch the next packet of data ('nextUri') and one with the uri to</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line"><tt class="py-docstring">    cancel the query ('partialCancelUri').</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line"><tt class="py-docstring">    The client should send GET requests to the server (Header: X-Presto-Source, User-Agent, X-Presto-User.</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line"><tt class="py-docstring">    Body: empty) following the 'nextUri' link from the previous response until the servers response does not</tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line"><tt class="py-docstring">    contain an 'nextUri' link anymore. When there is no 'nextUri' the query is finished. If the last response</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line"><tt class="py-docstring">    from the server included an error section ('error') the query failed, otherwise the query succeeded. If</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"><tt class="py-docstring">    the http status of the server response is anything other than 200 with Content-Type application/json, the</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line"><tt class="py-docstring">    query should also be considered failed. A 503 http response means that the server is (too) busy. Retry the</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line"><tt class="py-docstring">    request after waiting at least 50ms.</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line"><tt class="py-docstring">    The server response may contain a 'state' variable. This is for informational purposes only (may be subject</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line"><tt class="py-docstring">    to change in future implementations).</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line"><tt class="py-docstring">    Each response by the server to a 'nextUri' may contain information about the columns returned by the query</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line"><tt class="py-docstring">    and all- or part of the querydata. If the response contains a data section the columns section will always</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line"><tt class="py-docstring">    be available.</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line"><tt class="py-docstring">    The server reponse may contain a variable with the uri to cancel the query ('partialCancelUri'). The client</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line"><tt class="py-docstring">    may issue a DELETE request to the server using this link. Response http status-code is 204.</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line"><tt class="py-docstring">    The Presto server will retain information about finished queries for 15 minutes. When a client does not</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line"><tt class="py-docstring">    respond to the server (by following the 'nextUri' links) the server will cancel these 'dead' queries after</tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line"><tt class="py-docstring">    5 minutes. These timeouts are hardcoded in the Presto server source code.</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line"><tt class="py-docstring">    Todo</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line"><tt class="py-docstring">    ====</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line"><tt class="py-docstring">        - Enable PrestoClient to handle multiple running queries simultaneously. Currently you can only run</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line"><tt class="py-docstring">        one query per instance of this class.</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line"><tt class="py-docstring">        - Add support for https connections</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-docstring">        - Add support for insert/update queries (if and when Presto server supports this).</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line"><tt class="py-docstring">    Availability</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-docstring">    ============</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line"><tt class="py-docstring">    PrestoClient source code is available through: U{https://github.com/easydatawarehousing/prestoclient}</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line"><tt class="py-docstring">    Additional information may be found here: U{http://www.easydatawarehousing.com/tag/presto/}</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line"> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">    <tt id="link-0" class="py-name" targets="Variable prestoclient.PrestoClient.__source=prestoclient.PrestoClient-class.html#__source"><a title="prestoclient.PrestoClient.__source" class="py-name" href="#" onclick="return doclink('link-0', '__source', 'link-0');">__source</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"PyPrestoClient"</tt>                 <tt class="py-comment">#: Client name sent to Presto server</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line">    <tt id="link-1" class="py-name" targets="Variable prestoclient.PrestoClient.__version=prestoclient.PrestoClient-class.html#__version"><a title="prestoclient.PrestoClient.__version" class="py-name" href="#" onclick="return doclink('link-1', '__version', 'link-1');">__version</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"0.3.1"</tt>                         <tt class="py-comment">#: PrestoClient version string</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line">    <tt id="link-2" class="py-name" targets="Variable prestoclient.PrestoClient.__useragent=prestoclient.PrestoClient-class.html#__useragent"><a title="prestoclient.PrestoClient.__useragent" class="py-name" href="#" onclick="return doclink('link-2', '__useragent', 'link-2');">__useragent</a></tt> <tt class="py-op">=</tt> <tt id="link-3" class="py-name"><a title="prestoclient.PrestoClient.__source" class="py-name" href="#" onclick="return doclink('link-3', '__source', 'link-0');">__source</a></tt> <tt class="py-op">+</tt> <tt class="py-string">"/"</tt> <tt class="py-op">+</tt> <tt id="link-4" class="py-name"><a title="prestoclient.PrestoClient.__version" class="py-name" href="#" onclick="return doclink('link-4', '__version', 'link-1');">__version</a></tt>    <tt class="py-comment">#: Useragent name sent to Presto server</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">    <tt id="link-5" class="py-name" targets="Variable prestoclient.PrestoClient.__urltimeout=prestoclient.PrestoClient-class.html#__urltimeout"><a title="prestoclient.PrestoClient.__urltimeout" class="py-name" href="#" onclick="return doclink('link-5', '__urltimeout', 'link-5');">__urltimeout</a></tt> <tt class="py-op">=</tt> <tt class="py-number">5000</tt>                         <tt class="py-comment">#: Timeout in millisec to wait for Presto server to respond</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">    <tt id="link-6" class="py-name" targets="Variable prestoclient.PrestoClient.__updatewaittimemsec=prestoclient.PrestoClient-class.html#__updatewaittimemsec"><a title="prestoclient.PrestoClient.__updatewaittimemsec" class="py-name" href="#" onclick="return doclink('link-6', '__updatewaittimemsec', 'link-6');">__updatewaittimemsec</a></tt> <tt class="py-op">=</tt> <tt class="py-number">1500</tt>                 <tt class="py-comment">#: Wait time in millisec to wait between requests to Presto server</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line">    <tt id="link-7" class="py-name" targets="Variable prestoclient.PrestoClient.__retrievewaittimemsec=prestoclient.PrestoClient-class.html#__retrievewaittimemsec"><a title="prestoclient.PrestoClient.__retrievewaittimemsec" class="py-name" href="#" onclick="return doclink('link-7', '__retrievewaittimemsec', 'link-7');">__retrievewaittimemsec</a></tt> <tt class="py-op">=</tt> <tt class="py-number">50</tt>                 <tt class="py-comment">#: Wait time in millisec to wait between requests when recieving data</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">    <tt id="link-8" class="py-name" targets="Variable prestoclient.PrestoClient.__retrywaittimemsec=prestoclient.PrestoClient-class.html#__retrywaittimemsec"><a title="prestoclient.PrestoClient.__retrywaittimemsec" class="py-name" href="#" onclick="return doclink('link-8', '__retrywaittimemsec', 'link-8');">__retrywaittimemsec</a></tt> <tt class="py-op">=</tt> <tt class="py-number">100</tt>                   <tt class="py-comment">#: Wait time in millisec to wait before retrying a request</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line">    <tt id="link-9" class="py-name" targets="Variable prestoclient.PrestoClient.__maximumretries=prestoclient.PrestoClient-class.html#__maximumretries"><a title="prestoclient.PrestoClient.__maximumretries" class="py-name" href="#" onclick="return doclink('link-9', '__maximumretries', 'link-9');">__maximumretries</a></tt> <tt class="py-op">=</tt> <tt class="py-number">5</tt>                        <tt class="py-comment">#: Maximum number of retries fro request in case of 503 errors</tt> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">    <tt id="link-10" class="py-name" targets="Variable prestoclient.PrestoClient.__server=prestoclient.PrestoClient-class.html#__server"><a title="prestoclient.PrestoClient.__server" class="py-name" href="#" onclick="return doclink('link-10', '__server', 'link-10');">__server</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                               <tt class="py-comment">#: IP address or DNS name of Presto server</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">    <tt id="link-11" class="py-name" targets="Variable prestoclient.PrestoClient.__port=prestoclient.PrestoClient-class.html#__port"><a title="prestoclient.PrestoClient.__port" class="py-name" href="#" onclick="return doclink('link-11', '__port', 'link-11');">__port</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt>                                  <tt class="py-comment">#: TCP port of Presto server</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">    <tt id="link-12" class="py-name" targets="Variable prestoclient.PrestoClient.__catalog=prestoclient.PrestoClient-class.html#__catalog"><a title="prestoclient.PrestoClient.__catalog" class="py-name" href="#" onclick="return doclink('link-12', '__catalog', 'link-12');">__catalog</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                              <tt class="py-comment">#: Catalog name to be used by Presto server</tt> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">    <tt id="link-13" class="py-name" targets="Variable prestoclient.PrestoClient.__user=prestoclient.PrestoClient-class.html#__user"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-13', '__user', 'link-13');">__user</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                                 <tt class="py-comment">#: Username to pass to Presto server</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line">    <tt id="link-14" class="py-name" targets="Variable prestoclient.PrestoClient.__timezone=prestoclient.PrestoClient-class.html#__timezone"><a title="prestoclient.PrestoClient.__timezone" class="py-name" href="#" onclick="return doclink('link-14', '__timezone', 'link-14');">__timezone</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                             <tt class="py-comment">#: Timezone to pass to Presto server</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line">    <tt id="link-15" class="py-name" targets="Variable prestoclient.PrestoClient.__language=prestoclient.PrestoClient-class.html#__language"><a title="prestoclient.PrestoClient.__language" class="py-name" href="#" onclick="return doclink('link-15', '__language', 'link-15');">__language</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                             <tt class="py-comment">#: Language to pass to Presto server</tt> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">    <tt id="link-16" class="py-name" targets="Variable prestoclient.PrestoClient.__lasterror=prestoclient.PrestoClient-class.html#__lasterror"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-16', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                            <tt class="py-comment">#: Html error of last request</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">    <tt id="link-17" class="py-name" targets="Variable prestoclient.PrestoClient.__lastinfouri=prestoclient.PrestoClient-class.html#__lastinfouri"><a title="prestoclient.PrestoClient.__lastinfouri" class="py-name" href="#" onclick="return doclink('link-17', '__lastinfouri', 'link-17');">__lastinfouri</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                          <tt class="py-comment">#: Uri to query information on the Presto server</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">    <tt id="link-18" class="py-name" targets="Variable prestoclient.PrestoClient.__lastnexturi=prestoclient.PrestoClient-class.html#__lastnexturi"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-18', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                          <tt class="py-comment">#: Uri to next dataframe on the Presto server</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">    <tt id="link-19" class="py-name" targets="Variable prestoclient.PrestoClient.__lastcanceluri=prestoclient.PrestoClient-class.html#__lastcanceluri"><a title="prestoclient.PrestoClient.__lastcanceluri" class="py-name" href="#" onclick="return doclink('link-19', '__lastcanceluri', 'link-19');">__lastcanceluri</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                        <tt class="py-comment">#: Uri to cancel query on the Presto server</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line">    <tt id="link-20" class="py-name" targets="Variable prestoclient.PrestoClient.__laststate=prestoclient.PrestoClient-class.html#__laststate"><a title="prestoclient.PrestoClient.__laststate" class="py-name" href="#" onclick="return doclink('link-20', '__laststate', 'link-20');">__laststate</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt>                            <tt class="py-comment">#: State returned by last request to Presto server</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">    <tt id="link-21" class="py-name" targets="Variable prestoclient.PrestoClient.__clientstatus=prestoclient.PrestoClient-class.html#__clientstatus"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-21', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"NONE"</tt>                     <tt class="py-comment">#: Status defined by PrestoClient: NONE, RUNNING, SUCCEEDED, FAILED</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">    <tt id="link-22" class="py-name" targets="Variable prestoclient.PrestoClient.__cancelquery=prestoclient.PrestoClient-class.html#__cancelquery"><a title="prestoclient.PrestoClient.__cancelquery" class="py-name" href="#" onclick="return doclink('link-22', '__cancelquery', 'link-22');">__cancelquery</a></tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt>                       <tt class="py-comment">#: Boolean, when set to True signals that query should be cancelled</tt> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line">    <tt id="link-23" class="py-name" targets="Variable prestoclient.PrestoClient.__lastresponse=prestoclient.PrestoClient-class.html#__lastresponse"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-23', '__lastresponse', 'link-23');">__lastresponse</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt>                         <tt class="py-comment">#: Buffer for last response of Presto server</tt> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line">    <tt id="link-24" class="py-name" targets="Variable prestoclient.PrestoClient.__columns=prestoclient.PrestoClient-class.html#__columns"><a title="prestoclient.PrestoClient.__columns" class="py-name" href="#" onclick="return doclink('link-24', '__columns', 'link-24');">__columns</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt>                              <tt class="py-comment">#: Buffer for the column information returned by the query</tt> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt>  <tt class="py-line">    <tt id="link-25" class="py-name" targets="Variable prestoclient.PrestoClient.__data=prestoclient.PrestoClient-class.html#__data"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-25', '__data', 'link-25');">__data</a></tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt>                                 <tt class="py-comment">#: Buffer for the data returned by the query</tt> </tt>
<a name="L135"></a><tt class="py-lineno">135</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.__init__"></a><div id="PrestoClient.__init__-def"><a name="L136"></a><tt class="py-lineno">136</tt> <a class="py-toggle" href="#" id="PrestoClient.__init__-toggle" onclick="return toggle('PrestoClient.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">in_server</tt><tt class="py-op">,</tt> <tt class="py-param">in_port</tt><tt class="py-op">=</tt><tt class="py-number">8080</tt><tt class="py-op">,</tt> <tt class="py-param">in_catalog</tt><tt class="py-op">=</tt><tt class="py-string">"hive"</tt><tt class="py-op">,</tt> <tt class="py-param">in_user</tt><tt class="py-op">=</tt><tt class="py-string">""</tt><tt class="py-op">,</tt> <tt class="py-param">in_timezone</tt><tt class="py-op">=</tt><tt class="py-string">""</tt><tt class="py-op">,</tt> <tt class="py-param">in_language</tt><tt class="py-op">=</tt><tt class="py-string">""</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.__init__-expanded"><a name="L137"></a><tt class="py-lineno">137</tt>  <tt class="py-line">        <tt class="py-docstring">""" Constructor of PrestoClient class.</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt>  <tt class="py-line"><tt class="py-docstring">        Arguments:</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt>  <tt class="py-line"><tt class="py-docstring">        in_server   -- IP Address or dns name of the Presto server running the discovery service</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L143"></a><tt class="py-lineno">143</tt>  <tt class="py-line"><tt class="py-docstring">        in_port     -- TCP port of the Prestoserver running the discovery service (default 8080)</tt> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt>  <tt class="py-line"><tt class="py-docstring">        in_catalog  -- Catalog name that the Prestoserver should use to query hdfs (default 'hive')</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L147"></a><tt class="py-lineno">147</tt>  <tt class="py-line"><tt class="py-docstring">        in_user     -- Username to pass to the Prestoserver. If left blank the username from the OS is used</tt> </tt>
<a name="L148"></a><tt class="py-lineno">148</tt>  <tt class="py-line"><tt class="py-docstring">        (default '')</tt> </tt>
<a name="L149"></a><tt class="py-lineno">149</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L150"></a><tt class="py-lineno">150</tt>  <tt class="py-line"><tt class="py-docstring">        in_timezone -- Timezone to pass to the Prestoserver. Leave blank (=default) for servers default timezone.</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt>  <tt class="py-line"><tt class="py-docstring">        (IANA timezone format)</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L153"></a><tt class="py-lineno">153</tt>  <tt class="py-line"><tt class="py-docstring">        in_language -- Language to pass to the Prestoserver. Leave blank (=default) for the servers default language.</tt> </tt>
<a name="L154"></a><tt class="py-lineno">154</tt>  <tt class="py-line"><tt class="py-docstring">        (ISO-639-1 code)</tt> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L156"></a><tt class="py-lineno">156</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L157"></a><tt class="py-lineno">157</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-26" class="py-name"><a title="prestoclient.PrestoClient.__server" class="py-name" href="#" onclick="return doclink('link-26', '__server', 'link-10');">__server</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_server</tt> </tt>
<a name="L158"></a><tt class="py-lineno">158</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-27" class="py-name"><a title="prestoclient.PrestoClient.__port" class="py-name" href="#" onclick="return doclink('link-27', '__port', 'link-11');">__port</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_port</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-28" class="py-name"><a title="prestoclient.PrestoClient.__catalog" class="py-name" href="#" onclick="return doclink('link-28', '__catalog', 'link-12');">__catalog</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_catalog</tt> </tt>
<a name="L160"></a><tt class="py-lineno">160</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-29" class="py-name"><a title="prestoclient.PrestoClient.__timezone" class="py-name" href="#" onclick="return doclink('link-29', '__timezone', 'link-14');">__timezone</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_timezone</tt> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-30" class="py-name"><a title="prestoclient.PrestoClient.__language" class="py-name" href="#" onclick="return doclink('link-30', '__language', 'link-15');">__language</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_language</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt>  <tt class="py-line"> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">in_user</tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-31" class="py-name"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-31', '__user', 'link-13');">__user</a></tt> <tt class="py-op">=</tt> <tt class="py-name">getpass</tt><tt class="py-op">.</tt><tt class="py-name">getuser</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L165"></a><tt class="py-lineno">165</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-32" class="py-name"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-32', '__user', 'link-13');">__user</a></tt> <tt class="py-op">=</tt> <tt class="py-name">in_user</tt> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt>  <tt class="py-line"> </tt>
<a name="L168"></a><tt class="py-lineno">168</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> </tt>
</div><a name="L169"></a><tt class="py-lineno">169</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.runquery"></a><div id="PrestoClient.runquery-def"><a name="L170"></a><tt class="py-lineno">170</tt> <a class="py-toggle" href="#" id="PrestoClient.runquery-toggle" onclick="return toggle('PrestoClient.runquery');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#runquery">runquery</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">in_sql_statement</tt><tt class="py-op">,</tt> <tt class="py-param">in_schema</tt><tt class="py-op">=</tt><tt class="py-string">"default"</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.runquery-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.runquery-expanded"><a name="L171"></a><tt class="py-lineno">171</tt>  <tt class="py-line">        <tt class="py-docstring">""" Execute a query. Currently, only one simultaneous query per instance of the PrestoClient class is allowed.</tt> </tt>
<a name="L172"></a><tt class="py-lineno">172</tt>  <tt class="py-line"><tt class="py-docstring">        Starting a new query will discard any data previously retrieved ! Returns True if query succeeded.</tt> </tt>
<a name="L173"></a><tt class="py-lineno">173</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L174"></a><tt class="py-lineno">174</tt>  <tt class="py-line"><tt class="py-docstring">        Arguments:</tt> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L176"></a><tt class="py-lineno">176</tt>  <tt class="py-line"><tt class="py-docstring">        in_sql_statement -- The query that should be executed by the Presto server</tt> </tt>
<a name="L177"></a><tt class="py-lineno">177</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L178"></a><tt class="py-lineno">178</tt>  <tt class="py-line"><tt class="py-docstring">        in_schema        -- The HDFS schema that should be used (default 'default')</tt> </tt>
<a name="L179"></a><tt class="py-lineno">179</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L180"></a><tt class="py-lineno">180</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L181"></a><tt class="py-lineno">181</tt>  <tt class="py-line"> </tt>
<a name="L182"></a><tt class="py-lineno">182</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-33" class="py-name" targets="Method prestoclient.PrestoClient.startquery()=prestoclient.PrestoClient-class.html#startquery"><a title="prestoclient.PrestoClient.startquery" class="py-name" href="#" onclick="return doclink('link-33', 'startquery', 'link-33');">startquery</a></tt><tt class="py-op">(</tt><tt class="py-name">in_sql_statement</tt><tt class="py-op">,</tt> <tt class="py-name">in_schema</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L183"></a><tt class="py-lineno">183</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L185"></a><tt class="py-lineno">185</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-34" class="py-name" targets="Method prestoclient.PrestoClient.waituntilfinished()=prestoclient.PrestoClient-class.html#waituntilfinished"><a title="prestoclient.PrestoClient.waituntilfinished" class="py-name" href="#" onclick="return doclink('link-34', 'waituntilfinished', 'link-34');">waituntilfinished</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L186"></a><tt class="py-lineno">186</tt>  <tt class="py-line"> </tt>
<a name="L187"></a><tt class="py-lineno">187</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-35" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-35', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">==</tt> <tt class="py-string">"SUCCEEDED"</tt> </tt>
</div><a name="L188"></a><tt class="py-lineno">188</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getversion"></a><div id="PrestoClient.getversion-def"><a name="L189"></a><tt class="py-lineno">189</tt> <a class="py-toggle" href="#" id="PrestoClient.getversion-toggle" onclick="return toggle('PrestoClient.getversion');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getversion">getversion</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getversion-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getversion-expanded"><a name="L190"></a><tt class="py-lineno">190</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return PrestoClient version number. """</tt> </tt>
<a name="L191"></a><tt class="py-lineno">191</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-36" class="py-name"><a title="prestoclient.PrestoClient.__version" class="py-name" href="#" onclick="return doclink('link-36', '__version', 'link-1');">__version</a></tt> </tt>
</div><a name="L192"></a><tt class="py-lineno">192</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getlastresponse"></a><div id="PrestoClient.getlastresponse-def"><a name="L193"></a><tt class="py-lineno">193</tt> <a class="py-toggle" href="#" id="PrestoClient.getlastresponse-toggle" onclick="return toggle('PrestoClient.getlastresponse');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getlastresponse">getlastresponse</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getlastresponse-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getlastresponse-expanded"><a name="L194"></a><tt class="py-lineno">194</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return response of last executed request to the prestoserver. """</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-37" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-37', '__lastresponse', 'link-23');">__lastresponse</a></tt> </tt>
</div><a name="L196"></a><tt class="py-lineno">196</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getstatus"></a><div id="PrestoClient.getstatus-def"><a name="L197"></a><tt class="py-lineno">197</tt> <a class="py-toggle" href="#" id="PrestoClient.getstatus-toggle" onclick="return toggle('PrestoClient.getstatus');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getstatus">getstatus</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getstatus-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getstatus-expanded"><a name="L198"></a><tt class="py-lineno">198</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return status of the client. Note this is not the same as the state reported by the Presto server! """</tt> </tt>
<a name="L199"></a><tt class="py-lineno">199</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-38" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-38', '__clientstatus', 'link-21');">__clientstatus</a></tt> </tt>
</div><a name="L200"></a><tt class="py-lineno">200</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getlastserverstate"></a><div id="PrestoClient.getlastserverstate-def"><a name="L201"></a><tt class="py-lineno">201</tt> <a class="py-toggle" href="#" id="PrestoClient.getlastserverstate-toggle" onclick="return toggle('PrestoClient.getlastserverstate');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getlastserverstate">getlastserverstate</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getlastserverstate-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getlastserverstate-expanded"><a name="L202"></a><tt class="py-lineno">202</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return state of the request as reported by the Presto server. """</tt> </tt>
<a name="L203"></a><tt class="py-lineno">203</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-39" class="py-name"><a title="prestoclient.PrestoClient.__laststate" class="py-name" href="#" onclick="return doclink('link-39', '__laststate', 'link-20');">__laststate</a></tt> </tt>
</div><a name="L204"></a><tt class="py-lineno">204</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getlasterrormessage"></a><div id="PrestoClient.getlasterrormessage-def"><a name="L205"></a><tt class="py-lineno">205</tt> <a class="py-toggle" href="#" id="PrestoClient.getlasterrormessage-toggle" onclick="return toggle('PrestoClient.getlasterrormessage');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getlasterrormessage">getlasterrormessage</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getlasterrormessage-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getlasterrormessage-expanded"><a name="L206"></a><tt class="py-lineno">206</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return error message of last executed request to the prestoserver or empty string if there is no error. """</tt> </tt>
<a name="L207"></a><tt class="py-lineno">207</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-40" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-40', '__lasterror', 'link-16');">__lasterror</a></tt> </tt>
</div><a name="L208"></a><tt class="py-lineno">208</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getcolumns"></a><div id="PrestoClient.getcolumns-def"><a name="L209"></a><tt class="py-lineno">209</tt> <a class="py-toggle" href="#" id="PrestoClient.getcolumns-toggle" onclick="return toggle('PrestoClient.getcolumns');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getcolumns">getcolumns</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getcolumns-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getcolumns-expanded"><a name="L210"></a><tt class="py-lineno">210</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return the column information of the queryresults. Nested list of datatype / fieldname. """</tt> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-41" class="py-name"><a title="prestoclient.PrestoClient.__columns" class="py-name" href="#" onclick="return doclink('link-41', '__columns', 'link-24');">__columns</a></tt> </tt>
</div><a name="L212"></a><tt class="py-lineno">212</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getnumberofdatarows"></a><div id="PrestoClient.getnumberofdatarows-def"><a name="L213"></a><tt class="py-lineno">213</tt> <a class="py-toggle" href="#" id="PrestoClient.getnumberofdatarows-toggle" onclick="return toggle('PrestoClient.getnumberofdatarows');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getnumberofdatarows">getnumberofdatarows</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getnumberofdatarows-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getnumberofdatarows-expanded"><a name="L214"></a><tt class="py-lineno">214</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return the length of the currently buffered data in number of rows. """</tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-42" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-42', '__data', 'link-25');">__data</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L216"></a><tt class="py-lineno">216</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getdata"></a><div id="PrestoClient.getdata-def"><a name="L217"></a><tt class="py-lineno">217</tt> <a class="py-toggle" href="#" id="PrestoClient.getdata-toggle" onclick="return toggle('PrestoClient.getdata');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getdata">getdata</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getdata-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getdata-expanded"><a name="L218"></a><tt class="py-lineno">218</tt>  <tt class="py-line">        <tt class="py-docstring">""" Return the currently buffered data. """</tt> </tt>
<a name="L219"></a><tt class="py-lineno">219</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-43" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-43', '__data', 'link-25');">__data</a></tt> </tt>
</div><a name="L220"></a><tt class="py-lineno">220</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.cleardata"></a><div id="PrestoClient.cleardata-def"><a name="L221"></a><tt class="py-lineno">221</tt> <a class="py-toggle" href="#" id="PrestoClient.cleardata-toggle" onclick="return toggle('PrestoClient.cleardata');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#cleardata">cleardata</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.cleardata-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.cleardata-expanded"><a name="L222"></a><tt class="py-lineno">222</tt>  <tt class="py-line">        <tt class="py-docstring">""" Empty the data buffer. You can use this function to implement your own 'streaming' data retrieval setup. """</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-44" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-44', '__data', 'link-25');">__data</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L224"></a><tt class="py-lineno">224</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> </tt>
</div><a name="L225"></a><tt class="py-lineno">225</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.startquery"></a><div id="PrestoClient.startquery-def"><a name="L226"></a><tt class="py-lineno">226</tt> <a class="py-toggle" href="#" id="PrestoClient.startquery-toggle" onclick="return toggle('PrestoClient.startquery');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#startquery">startquery</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">in_sql_statement</tt><tt class="py-op">,</tt> <tt class="py-param">in_schema</tt><tt class="py-op">=</tt><tt class="py-string">"default"</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.startquery-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.startquery-expanded"><a name="L227"></a><tt class="py-lineno">227</tt>  <tt class="py-line">        <tt class="py-docstring">""" Start a query. Currently, only one simultaneous query per instance of the PrestoClient class is allowed.</tt> </tt>
<a name="L228"></a><tt class="py-lineno">228</tt>  <tt class="py-line"><tt class="py-docstring">        Starting a new query will discard any data previously retrieved !</tt> </tt>
<a name="L229"></a><tt class="py-lineno">229</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L230"></a><tt class="py-lineno">230</tt>  <tt class="py-line"><tt class="py-docstring">        Arguments:</tt> </tt>
<a name="L231"></a><tt class="py-lineno">231</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L232"></a><tt class="py-lineno">232</tt>  <tt class="py-line"><tt class="py-docstring">        in_sql_statement -- The query that should be executed by the Presto server</tt> </tt>
<a name="L233"></a><tt class="py-lineno">233</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L234"></a><tt class="py-lineno">234</tt>  <tt class="py-line"><tt class="py-docstring">        in_schema        -- The HDFS schema that should be used (default 'default')</tt> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt>  <tt class="py-line"> </tt>
<a name="L238"></a><tt class="py-lineno">238</tt>  <tt class="py-line">        <tt class="py-name">headers</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-string">"X-Presto-Catalog"</tt><tt class="py-op">:</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-45" class="py-name"><a title="prestoclient.PrestoClient.__catalog" class="py-name" href="#" onclick="return doclink('link-45', '__catalog', 'link-12');">__catalog</a></tt><tt class="py-op">,</tt> </tt>
<a name="L239"></a><tt class="py-lineno">239</tt>  <tt class="py-line">                   <tt class="py-string">"X-Presto-Source"</tt><tt class="py-op">:</tt>  <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-46" class="py-name"><a title="prestoclient.PrestoClient.__source" class="py-name" href="#" onclick="return doclink('link-46', '__source', 'link-0');">__source</a></tt><tt class="py-op">,</tt> </tt>
<a name="L240"></a><tt class="py-lineno">240</tt>  <tt class="py-line">                   <tt class="py-string">"X-Presto-Schema"</tt><tt class="py-op">:</tt>  <tt class="py-name">in_schema</tt><tt class="py-op">,</tt> </tt>
<a name="L241"></a><tt class="py-lineno">241</tt>  <tt class="py-line">                   <tt class="py-string">"User-Agent"</tt><tt class="py-op">:</tt>       <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-47" class="py-name"><a title="prestoclient.PrestoClient.__useragent" class="py-name" href="#" onclick="return doclink('link-47', '__useragent', 'link-2');">__useragent</a></tt><tt class="py-op">,</tt> </tt>
<a name="L242"></a><tt class="py-lineno">242</tt>  <tt class="py-line">                   <tt class="py-string">"X-Presto-User"</tt><tt class="py-op">:</tt>    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-48" class="py-name"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-48', '__user', 'link-13');">__user</a></tt><tt class="py-op">}</tt> </tt>
<a name="L243"></a><tt class="py-lineno">243</tt>  <tt class="py-line"> </tt>
<a name="L244"></a><tt class="py-lineno">244</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-49" class="py-name"><a title="prestoclient.PrestoClient.__timezone" class="py-name" href="#" onclick="return doclink('link-49', '__timezone', 'link-14');">__timezone</a></tt><tt class="py-op">:</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt>  <tt class="py-line">            <tt class="py-name">headers</tt><tt class="py-op">[</tt><tt class="py-string">"X-Presto-Time-Zone"</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-50" class="py-name"><a title="prestoclient.PrestoClient.__timezone" class="py-name" href="#" onclick="return doclink('link-50', '__timezone', 'link-14');">__timezone</a></tt> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt>  <tt class="py-line"> </tt>
<a name="L247"></a><tt class="py-lineno">247</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-51" class="py-name"><a title="prestoclient.PrestoClient.__language" class="py-name" href="#" onclick="return doclink('link-51', '__language', 'link-15');">__language</a></tt><tt class="py-op">:</tt> </tt>
<a name="L248"></a><tt class="py-lineno">248</tt>  <tt class="py-line">            <tt class="py-name">headers</tt><tt class="py-op">[</tt><tt class="py-string">"X-Presto-Language"</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-52" class="py-name"><a title="prestoclient.PrestoClient.__language" class="py-name" href="#" onclick="return doclink('link-52', '__language', 'link-15');">__language</a></tt> </tt>
<a name="L249"></a><tt class="py-lineno">249</tt>  <tt class="py-line"> </tt>
<a name="L250"></a><tt class="py-lineno">250</tt>  <tt class="py-line">        <tt class="py-comment"># Prepare statement</tt> </tt>
<a name="L251"></a><tt class="py-lineno">251</tt>  <tt class="py-line">        <tt class="py-name">sql</tt> <tt class="py-op">=</tt> <tt class="py-name">in_sql_statement</tt> </tt>
<a name="L252"></a><tt class="py-lineno">252</tt>  <tt class="py-line">        <tt class="py-name">sql</tt> <tt class="py-op">=</tt> <tt class="py-name">sql</tt><tt class="py-op">.</tt><tt class="py-name">strip</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L253"></a><tt class="py-lineno">253</tt>  <tt class="py-line">        <tt class="py-name">sql</tt> <tt class="py-op">=</tt> <tt class="py-name">sql</tt><tt class="py-op">.</tt><tt class="py-name">rstrip</tt><tt class="py-op">(</tt><tt class="py-string">";"</tt><tt class="py-op">)</tt> </tt>
<a name="L254"></a><tt class="py-lineno">254</tt>  <tt class="py-line"> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">sql</tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L256"></a><tt class="py-lineno">256</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-53" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-53', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"No query entered"</tt> </tt>
<a name="L257"></a><tt class="py-lineno">257</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L258"></a><tt class="py-lineno">258</tt>  <tt class="py-line"> </tt>
<a name="L259"></a><tt class="py-lineno">259</tt>  <tt class="py-line">        <tt class="py-comment"># Check current state, any status except running is okay</tt> </tt>
<a name="L260"></a><tt class="py-lineno">260</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-54" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-54', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">==</tt> <tt class="py-string">"RUNNING"</tt><tt class="py-op">:</tt> </tt>
<a name="L261"></a><tt class="py-lineno">261</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-55" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-55', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Query already running. Please create a new instance of PrestoClient class"</tt> </tt>
<a name="L262"></a><tt class="py-lineno">262</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L263"></a><tt class="py-lineno">263</tt>  <tt class="py-line"> </tt>
<a name="L264"></a><tt class="py-lineno">264</tt>  <tt class="py-line">        <tt class="py-comment"># Reset variables</tt> </tt>
<a name="L265"></a><tt class="py-lineno">265</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-56" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-56', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L266"></a><tt class="py-lineno">266</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-57" class="py-name"><a title="prestoclient.PrestoClient.__lastinfouri" class="py-name" href="#" onclick="return doclink('link-57', '__lastinfouri', 'link-17');">__lastinfouri</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L267"></a><tt class="py-lineno">267</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-58" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-58', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L268"></a><tt class="py-lineno">268</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-59" class="py-name"><a title="prestoclient.PrestoClient.__lastcanceluri" class="py-name" href="#" onclick="return doclink('link-59', '__lastcanceluri', 'link-19');">__lastcanceluri</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L269"></a><tt class="py-lineno">269</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-60" class="py-name"><a title="prestoclient.PrestoClient.__laststate" class="py-name" href="#" onclick="return doclink('link-60', '__laststate', 'link-20');">__laststate</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L270"></a><tt class="py-lineno">270</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-61" class="py-name"><a title="prestoclient.PrestoClient.__cancelquery" class="py-name" href="#" onclick="return doclink('link-61', '__cancelquery', 'link-22');">__cancelquery</a></tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
<a name="L271"></a><tt class="py-lineno">271</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-62" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-62', '__lastresponse', 'link-23');">__lastresponse</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L272"></a><tt class="py-lineno">272</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-63" class="py-name"><a title="prestoclient.PrestoClient.__columns" class="py-name" href="#" onclick="return doclink('link-63', '__columns', 'link-24');">__columns</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L273"></a><tt class="py-lineno">273</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-64" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-64', '__data', 'link-25');">__data</a></tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L274"></a><tt class="py-lineno">274</tt>  <tt class="py-line"> </tt>
<a name="L275"></a><tt class="py-lineno">275</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L276"></a><tt class="py-lineno">276</tt>  <tt class="py-line">            <tt class="py-name">conn</tt> <tt class="py-op">=</tt> <tt class="py-name">httplib</tt><tt class="py-op">.</tt><tt class="py-name">HTTPConnection</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-65" class="py-name"><a title="prestoclient.PrestoClient.__server" class="py-name" href="#" onclick="return doclink('link-65', '__server', 'link-10');">__server</a></tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-66" class="py-name"><a title="prestoclient.PrestoClient.__port" class="py-name" href="#" onclick="return doclink('link-66', '__port', 'link-11');">__port</a></tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-67" class="py-name"><a title="prestoclient.PrestoClient.__urltimeout" class="py-name" href="#" onclick="return doclink('link-67', '__urltimeout', 'link-5');">__urltimeout</a></tt><tt class="py-op">)</tt> </tt>
<a name="L277"></a><tt class="py-lineno">277</tt>  <tt class="py-line">            <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">request</tt><tt class="py-op">(</tt><tt class="py-string">"POST"</tt><tt class="py-op">,</tt> <tt class="py-string">"/v1/statement"</tt><tt class="py-op">,</tt> <tt class="py-name">sql</tt><tt class="py-op">,</tt> <tt class="py-name">headers</tt><tt class="py-op">)</tt> </tt>
<a name="L278"></a><tt class="py-lineno">278</tt>  <tt class="py-line">            <tt class="py-name">response</tt> <tt class="py-op">=</tt> <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">getresponse</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L279"></a><tt class="py-lineno">279</tt>  <tt class="py-line"> </tt>
<a name="L280"></a><tt class="py-lineno">280</tt>  <tt class="py-line">            <tt class="py-comment"># Todo: add check on 503 return codes. In that case retry request. See __openuri</tt> </tt>
<a name="L281"></a><tt class="py-lineno">281</tt>  <tt class="py-line"> </tt>
<a name="L282"></a><tt class="py-lineno">282</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">status</tt> <tt class="py-op">!=</tt> <tt class="py-number">200</tt><tt class="py-op">:</tt> </tt>
<a name="L283"></a><tt class="py-lineno">283</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-68" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-68', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Connection error: "</tt> <tt class="py-op">+</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">status</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-string">" "</tt> <tt class="py-op">+</tt> <tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">reason</tt> </tt>
<a name="L284"></a><tt class="py-lineno">284</tt>  <tt class="py-line">                <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L285"></a><tt class="py-lineno">285</tt>  <tt class="py-line">                <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L286"></a><tt class="py-lineno">286</tt>  <tt class="py-line"> </tt>
<a name="L287"></a><tt class="py-lineno">287</tt>  <tt class="py-line">            <tt class="py-name">answer</tt> <tt class="py-op">=</tt> <tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">read</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L288"></a><tt class="py-lineno">288</tt>  <tt class="py-line"> </tt>
<a name="L289"></a><tt class="py-lineno">289</tt>  <tt class="py-line">            <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L290"></a><tt class="py-lineno">290</tt>  <tt class="py-line"> </tt>
<a name="L291"></a><tt class="py-lineno">291</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-69" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-69', '__lastresponse', 'link-23');">__lastresponse</a></tt> <tt class="py-op">=</tt> <tt class="py-name">json</tt><tt class="py-op">.</tt><tt class="py-name">loads</tt><tt class="py-op">(</tt><tt class="py-name">answer</tt><tt class="py-op">)</tt> </tt>
<a name="L292"></a><tt class="py-lineno">292</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-70" class="py-name" targets="Method prestoclient.PrestoClient.__getvarsfromresponse()=prestoclient.PrestoClient-class.html#__getvarsfromresponse"><a title="prestoclient.PrestoClient.__getvarsfromresponse" class="py-name" href="#" onclick="return doclink('link-70', '__getvarsfromresponse', 'link-70');">__getvarsfromresponse</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L293"></a><tt class="py-lineno">293</tt>  <tt class="py-line"> </tt>
<a name="L294"></a><tt class="py-lineno">294</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-op">(</tt><tt class="py-name">httplib</tt><tt class="py-op">.</tt><tt class="py-name">HTTPException</tt><tt class="py-op">,</tt> <tt class="py-name">socket</tt><tt class="py-op">.</tt><tt class="py-name">error</tt><tt class="py-op">)</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L295"></a><tt class="py-lineno">295</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-71" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-71', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Error connecting to server: "</tt> <tt class="py-op">+</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-72" class="py-name"><a title="prestoclient.PrestoClient.__server" class="py-name" href="#" onclick="return doclink('link-72', '__server', 'link-10');">__server</a></tt> <tt class="py-op">+</tt> <tt class="py-string">":"</tt> <tt class="py-op">+</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-73" class="py-name"><a title="prestoclient.PrestoClient.__port" class="py-name" href="#" onclick="return doclink('link-73', '__port', 'link-11');">__port</a></tt><tt class="py-op">)</tt> </tt>
<a name="L296"></a><tt class="py-lineno">296</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L297"></a><tt class="py-lineno">297</tt>  <tt class="py-line"> </tt>
<a name="L298"></a><tt class="py-lineno">298</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L299"></a><tt class="py-lineno">299</tt>  <tt class="py-line">            <tt class="py-keyword">pass</tt> </tt>
<a name="L300"></a><tt class="py-lineno">300</tt>  <tt class="py-line"> </tt>
<a name="L301"></a><tt class="py-lineno">301</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">True</tt> </tt>
</div><a name="L302"></a><tt class="py-lineno">302</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.waituntilfinished"></a><div id="PrestoClient.waituntilfinished-def"><a name="L303"></a><tt class="py-lineno">303</tt> <a class="py-toggle" href="#" id="PrestoClient.waituntilfinished-toggle" onclick="return toggle('PrestoClient.waituntilfinished');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#waituntilfinished">waituntilfinished</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">in_verbose</tt><tt class="py-op">=</tt><tt class="py-name">False</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.waituntilfinished-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.waituntilfinished-expanded"><a name="L304"></a><tt class="py-lineno">304</tt>  <tt class="py-line">        <tt class="py-docstring">""" Returns when query has finished. Override this function to implement your own data retrieval setup.</tt> </tt>
<a name="L305"></a><tt class="py-lineno">305</tt>  <tt class="py-line"><tt class="py-docstring">        For instance to run this function in a separate thread so other threads may request a cancellation.</tt> </tt>
<a name="L306"></a><tt class="py-lineno">306</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L307"></a><tt class="py-lineno">307</tt>  <tt class="py-line"><tt class="py-docstring">        Arguments:</tt> </tt>
<a name="L308"></a><tt class="py-lineno">308</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L309"></a><tt class="py-lineno">309</tt>  <tt class="py-line"><tt class="py-docstring">        in_verbose -- If True print some simple progress messages (default False)</tt> </tt>
<a name="L310"></a><tt class="py-lineno">310</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L311"></a><tt class="py-lineno">311</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L312"></a><tt class="py-lineno">312</tt>  <tt class="py-line">        <tt class="py-name">tries</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L313"></a><tt class="py-lineno">313</tt>  <tt class="py-line"> </tt>
<a name="L314"></a><tt class="py-lineno">314</tt>  <tt class="py-line">        <tt class="py-keyword">while</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-74" class="py-name" targets="Method prestoclient.PrestoClient.queryisrunning()=prestoclient.PrestoClient-class.html#queryisrunning"><a title="prestoclient.PrestoClient.queryisrunning" class="py-name" href="#" onclick="return doclink('link-74', 'queryisrunning', 'link-74');">queryisrunning</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L315"></a><tt class="py-lineno">315</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">in_verbose</tt><tt class="py-op">:</tt> </tt>
<a name="L316"></a><tt class="py-lineno">316</tt>  <tt class="py-line">                <tt class="py-name">tries</tt> <tt class="py-op">+=</tt> <tt class="py-number">1</tt> </tt>
<a name="L317"></a><tt class="py-lineno">317</tt>  <tt class="py-line">                <tt class="py-keyword">print</tt> <tt class="py-string">"Ping: "</tt><tt class="py-op">,</tt> <tt class="py-name">tries</tt><tt class="py-op">,</tt> <tt class="py-string">" Rows="</tt><tt class="py-op">,</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-75" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-75', '__data', 'link-25');">__data</a></tt><tt class="py-op">)</tt> </tt>
<a name="L318"></a><tt class="py-lineno">318</tt>  <tt class="py-line"> </tt>
<a name="L319"></a><tt class="py-lineno">319</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-76" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-76', '__data', 'link-25');">__data</a></tt><tt class="py-op">:</tt> </tt>
<a name="L320"></a><tt class="py-lineno">320</tt>  <tt class="py-line">                <tt class="py-name">sleep</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-77" class="py-name"><a title="prestoclient.PrestoClient.__retrievewaittimemsec" class="py-name" href="#" onclick="return doclink('link-77', '__retrievewaittimemsec', 'link-7');">__retrievewaittimemsec</a></tt><tt class="py-op">/</tt><tt class="py-number">1000</tt><tt class="py-op">)</tt> </tt>
<a name="L321"></a><tt class="py-lineno">321</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L322"></a><tt class="py-lineno">322</tt>  <tt class="py-line">                <tt class="py-name">sleep</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-78" class="py-name"><a title="prestoclient.PrestoClient.__updatewaittimemsec" class="py-name" href="#" onclick="return doclink('link-78', '__updatewaittimemsec', 'link-6');">__updatewaittimemsec</a></tt><tt class="py-op">/</tt><tt class="py-number">1000</tt><tt class="py-op">)</tt> </tt>
<a name="L323"></a><tt class="py-lineno">323</tt>  <tt class="py-line"> </tt>
<a name="L324"></a><tt class="py-lineno">324</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">in_verbose</tt><tt class="py-op">:</tt> </tt>
<a name="L325"></a><tt class="py-lineno">325</tt>  <tt class="py-line">            <tt class="py-keyword">print</tt> <tt class="py-string">"Done: "</tt><tt class="py-op">,</tt> <tt class="py-name">tries</tt> <tt class="py-op">+</tt> <tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-string">" Rows="</tt><tt class="py-op">,</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-79" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-79', '__data', 'link-25');">__data</a></tt><tt class="py-op">)</tt> </tt>
<a name="L326"></a><tt class="py-lineno">326</tt>  <tt class="py-line"> </tt>
<a name="L327"></a><tt class="py-lineno">327</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> </tt>
</div><a name="L328"></a><tt class="py-lineno">328</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.queryisrunning"></a><div id="PrestoClient.queryisrunning-def"><a name="L329"></a><tt class="py-lineno">329</tt> <a class="py-toggle" href="#" id="PrestoClient.queryisrunning-toggle" onclick="return toggle('PrestoClient.queryisrunning');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#queryisrunning">queryisrunning</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.queryisrunning-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.queryisrunning-expanded"><a name="L330"></a><tt class="py-lineno">330</tt>  <tt class="py-line">        <tt class="py-docstring">""" Returns True if query is running. """</tt> </tt>
<a name="L331"></a><tt class="py-lineno">331</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-80" class="py-name"><a title="prestoclient.PrestoClient.__cancelquery" class="py-name" href="#" onclick="return doclink('link-80', '__cancelquery', 'link-22');">__cancelquery</a></tt><tt class="py-op">:</tt> </tt>
<a name="L332"></a><tt class="py-lineno">332</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-81" class="py-name" targets="Method prestoclient.PrestoClient.__cancel()=prestoclient.PrestoClient-class.html#__cancel"><a title="prestoclient.PrestoClient.__cancel" class="py-name" href="#" onclick="return doclink('link-81', '__cancel', 'link-81');">__cancel</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L333"></a><tt class="py-lineno">333</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L334"></a><tt class="py-lineno">334</tt>  <tt class="py-line"> </tt>
<a name="L335"></a><tt class="py-lineno">335</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-82" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-82', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L336"></a><tt class="py-lineno">336</tt>  <tt class="py-line">            <tt class="py-comment"># This should never happen !</tt> </tt>
<a name="L337"></a><tt class="py-lineno">337</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L338"></a><tt class="py-lineno">338</tt>  <tt class="py-line"> </tt>
<a name="L339"></a><tt class="py-lineno">339</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-83" class="py-name" targets="Method prestoclient.PrestoClient.__openuri()=prestoclient.PrestoClient-class.html#__openuri"><a title="prestoclient.PrestoClient.__openuri" class="py-name" href="#" onclick="return doclink('link-83', '__openuri', 'link-83');">__openuri</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-84" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-84', '__lastnexturi', 'link-18');">__lastnexturi</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L340"></a><tt class="py-lineno">340</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L341"></a><tt class="py-lineno">341</tt>  <tt class="py-line"> </tt>
<a name="L342"></a><tt class="py-lineno">342</tt>  <tt class="py-line">        <tt class="py-comment">#print "response: ", self.__lastresponse</tt> </tt>
<a name="L343"></a><tt class="py-lineno">343</tt>  <tt class="py-line"> </tt>
<a name="L344"></a><tt class="py-lineno">344</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-85" class="py-name"><a title="prestoclient.PrestoClient.__getvarsfromresponse" class="py-name" href="#" onclick="return doclink('link-85', '__getvarsfromresponse', 'link-70');">__getvarsfromresponse</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L345"></a><tt class="py-lineno">345</tt>  <tt class="py-line"> </tt>
<a name="L346"></a><tt class="py-lineno">346</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-86" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-86', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L347"></a><tt class="py-lineno">347</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L348"></a><tt class="py-lineno">348</tt>  <tt class="py-line"> </tt>
<a name="L349"></a><tt class="py-lineno">349</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">True</tt> </tt>
</div><a name="L350"></a><tt class="py-lineno">350</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.getqueryinfo"></a><div id="PrestoClient.getqueryinfo-def"><a name="L351"></a><tt class="py-lineno">351</tt> <a class="py-toggle" href="#" id="PrestoClient.getqueryinfo-toggle" onclick="return toggle('PrestoClient.getqueryinfo');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#getqueryinfo">getqueryinfo</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.getqueryinfo-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.getqueryinfo-expanded"><a name="L352"></a><tt class="py-lineno">352</tt>  <tt class="py-line">        <tt class="py-docstring">""" Requests query information from the Presto server and returns this as a dictonary. The Presto</tt> </tt>
<a name="L353"></a><tt class="py-lineno">353</tt>  <tt class="py-line"><tt class="py-docstring">        server removes this information 15 minutes after finishing the query.</tt> </tt>
<a name="L354"></a><tt class="py-lineno">354</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L355"></a><tt class="py-lineno">355</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L356"></a><tt class="py-lineno">356</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-87" class="py-name"><a title="prestoclient.PrestoClient.__lastinfouri" class="py-name" href="#" onclick="return doclink('link-87', '__lastinfouri', 'link-17');">__lastinfouri</a></tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L357"></a><tt class="py-lineno">357</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L358"></a><tt class="py-lineno">358</tt>  <tt class="py-line"> </tt>
<a name="L359"></a><tt class="py-lineno">359</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-88" class="py-name"><a title="prestoclient.PrestoClient.__openuri" class="py-name" href="#" onclick="return doclink('link-88', '__openuri', 'link-83');">__openuri</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-89" class="py-name"><a title="prestoclient.PrestoClient.__lastinfouri" class="py-name" href="#" onclick="return doclink('link-89', '__lastinfouri', 'link-17');">__lastinfouri</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L360"></a><tt class="py-lineno">360</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L361"></a><tt class="py-lineno">361</tt>  <tt class="py-line"> </tt>
<a name="L362"></a><tt class="py-lineno">362</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-90" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-90', '__lastresponse', 'link-23');">__lastresponse</a></tt> </tt>
</div><a name="L363"></a><tt class="py-lineno">363</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.cancelquery"></a><div id="PrestoClient.cancelquery-def"><a name="L364"></a><tt class="py-lineno">364</tt> <a class="py-toggle" href="#" id="PrestoClient.cancelquery-toggle" onclick="return toggle('PrestoClient.cancelquery');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#cancelquery">cancelquery</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.cancelquery-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.cancelquery-expanded"><a name="L365"></a><tt class="py-lineno">365</tt>  <tt class="py-line">        <tt class="py-docstring">""" Inform Prestoclient to cancel the running query. When queryisrunning() is called</tt> </tt>
<a name="L366"></a><tt class="py-lineno">366</tt>  <tt class="py-line"><tt class="py-docstring">        prestoclient will send a cancel query request to the Presto server.</tt> </tt>
<a name="L367"></a><tt class="py-lineno">367</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L368"></a><tt class="py-lineno">368</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L369"></a><tt class="py-lineno">369</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-91" class="py-name"><a title="prestoclient.PrestoClient.__cancelquery" class="py-name" href="#" onclick="return doclink('link-91', '__cancelquery', 'link-22');">__cancelquery</a></tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L370"></a><tt class="py-lineno">370</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> </tt>
</div><a name="L371"></a><tt class="py-lineno">371</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.__openuri"></a><div id="PrestoClient.__openuri-def"><a name="L372"></a><tt class="py-lineno">372</tt> <a class="py-toggle" href="#" id="PrestoClient.__openuri-toggle" onclick="return toggle('PrestoClient.__openuri');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#__openuri">__openuri</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">in_uri</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.__openuri-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.__openuri-expanded"><a name="L373"></a><tt class="py-lineno">373</tt>  <tt class="py-line">        <tt class="py-docstring">""" Internal function, sends a GET request to the Presto server """</tt> </tt>
<a name="L374"></a><tt class="py-lineno">374</tt>  <tt class="py-line">        <tt class="py-name">headers</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-string">"X-Presto-Source"</tt><tt class="py-op">:</tt>  <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-92" class="py-name"><a title="prestoclient.PrestoClient.__source" class="py-name" href="#" onclick="return doclink('link-92', '__source', 'link-0');">__source</a></tt><tt class="py-op">,</tt> </tt>
<a name="L375"></a><tt class="py-lineno">375</tt>  <tt class="py-line">                   <tt class="py-string">"User-Agent"</tt><tt class="py-op">:</tt>       <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-93" class="py-name"><a title="prestoclient.PrestoClient.__useragent" class="py-name" href="#" onclick="return doclink('link-93', '__useragent', 'link-2');">__useragent</a></tt><tt class="py-op">,</tt> </tt>
<a name="L376"></a><tt class="py-lineno">376</tt>  <tt class="py-line">                   <tt class="py-string">"X-Presto-User"</tt><tt class="py-op">:</tt>    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-94" class="py-name"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-94', '__user', 'link-13');">__user</a></tt><tt class="py-op">}</tt> </tt>
<a name="L377"></a><tt class="py-lineno">377</tt>  <tt class="py-line"> </tt>
<a name="L378"></a><tt class="py-lineno">378</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-95" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-95', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L379"></a><tt class="py-lineno">379</tt>  <tt class="py-line"> </tt>
<a name="L380"></a><tt class="py-lineno">380</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L381"></a><tt class="py-lineno">381</tt>  <tt class="py-line">            <tt class="py-name">retry</tt> <tt class="py-op">=</tt> <tt class="py-name">True</tt> </tt>
<a name="L382"></a><tt class="py-lineno">382</tt>  <tt class="py-line">            <tt class="py-name">retrycount</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L383"></a><tt class="py-lineno">383</tt>  <tt class="py-line"> </tt>
<a name="L384"></a><tt class="py-lineno">384</tt>  <tt class="py-line">            <tt class="py-keyword">while</tt> <tt class="py-name">retry</tt><tt class="py-op">:</tt> </tt>
<a name="L385"></a><tt class="py-lineno">385</tt>  <tt class="py-line">                <tt class="py-name">retrycount</tt> <tt class="py-op">+=</tt> <tt class="py-number">1</tt> </tt>
<a name="L386"></a><tt class="py-lineno">386</tt>  <tt class="py-line">                <tt class="py-name">conn</tt> <tt class="py-op">=</tt> <tt class="py-name">urllib2</tt><tt class="py-op">.</tt><tt class="py-name">urlopen</tt><tt class="py-op">(</tt><tt class="py-name">in_uri</tt><tt class="py-op">,</tt> <tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-96" class="py-name"><a title="prestoclient.PrestoClient.__urltimeout" class="py-name" href="#" onclick="return doclink('link-96', '__urltimeout', 'link-5');">__urltimeout</a></tt><tt class="py-op">)</tt> </tt>
<a name="L387"></a><tt class="py-lineno">387</tt>  <tt class="py-line">                <tt class="py-name">answer</tt> <tt class="py-op">=</tt> <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">read</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L388"></a><tt class="py-lineno">388</tt>  <tt class="py-line">                <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L389"></a><tt class="py-lineno">389</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-97" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-97', '__lastresponse', 'link-23');">__lastresponse</a></tt> <tt class="py-op">=</tt> <tt class="py-name">json</tt><tt class="py-op">.</tt><tt class="py-name">loads</tt><tt class="py-op">(</tt><tt class="py-name">answer</tt><tt class="py-op">)</tt> </tt>
<a name="L390"></a><tt class="py-lineno">390</tt>  <tt class="py-line"> </tt>
<a name="L391"></a><tt class="py-lineno">391</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">retrycount</tt> <tt class="py-op">&gt;</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-98" class="py-name"><a title="prestoclient.PrestoClient.__maximumretries" class="py-name" href="#" onclick="return doclink('link-98', '__maximumretries', 'link-9');">__maximumretries</a></tt><tt class="py-op">:</tt> </tt>
<a name="L392"></a><tt class="py-lineno">392</tt>  <tt class="py-line">                    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-99" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-99', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Maximum number of retries reached"</tt> </tt>
<a name="L393"></a><tt class="py-lineno">393</tt>  <tt class="py-line">                    <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L394"></a><tt class="py-lineno">394</tt>  <tt class="py-line"> </tt>
<a name="L395"></a><tt class="py-lineno">395</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">getcode</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-op">==</tt> <tt class="py-number">503</tt><tt class="py-op">:</tt> </tt>
<a name="L396"></a><tt class="py-lineno">396</tt>  <tt class="py-line">                    <tt class="py-name">sleep</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-100" class="py-name"><a title="prestoclient.PrestoClient.__retrywaittimemsec" class="py-name" href="#" onclick="return doclink('link-100', '__retrywaittimemsec', 'link-8');">__retrywaittimemsec</a></tt><tt class="py-op">/</tt><tt class="py-number">1000</tt><tt class="py-op">)</tt> </tt>
<a name="L397"></a><tt class="py-lineno">397</tt>  <tt class="py-line">                <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L398"></a><tt class="py-lineno">398</tt>  <tt class="py-line">                    <tt class="py-name">retry</tt> <tt class="py-op">=</tt> <tt class="py-name">False</tt> </tt>
<a name="L399"></a><tt class="py-lineno">399</tt>  <tt class="py-line"> </tt>
<a name="L400"></a><tt class="py-lineno">400</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-name">urllib2</tt><tt class="py-op">.</tt><tt class="py-name">HTTPError</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L401"></a><tt class="py-lineno">401</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-101" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-101', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"HTTP error: "</tt> <tt class="py-op">+</tt> <tt class="py-name">e</tt><tt class="py-op">.</tt><tt class="py-name">reason</tt> </tt>
<a name="L402"></a><tt class="py-lineno">402</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L403"></a><tt class="py-lineno">403</tt>  <tt class="py-line"> </tt>
<a name="L404"></a><tt class="py-lineno">404</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-name">urllib2</tt><tt class="py-op">.</tt><tt class="py-name">URLError</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L405"></a><tt class="py-lineno">405</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-102" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-102', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"URL error: "</tt> <tt class="py-op">+</tt> <tt class="py-name">e</tt><tt class="py-op">.</tt><tt class="py-name">reason</tt> </tt>
<a name="L406"></a><tt class="py-lineno">406</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L407"></a><tt class="py-lineno">407</tt>  <tt class="py-line"> </tt>
<a name="L408"></a><tt class="py-lineno">408</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L409"></a><tt class="py-lineno">409</tt>  <tt class="py-line">            <tt class="py-keyword">pass</tt> </tt>
<a name="L410"></a><tt class="py-lineno">410</tt>  <tt class="py-line"> </tt>
<a name="L411"></a><tt class="py-lineno">411</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">True</tt> </tt>
</div><a name="L412"></a><tt class="py-lineno">412</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.__getvarsfromresponse"></a><div id="PrestoClient.__getvarsfromresponse-def"><a name="L413"></a><tt class="py-lineno">413</tt> <a class="py-toggle" href="#" id="PrestoClient.__getvarsfromresponse-toggle" onclick="return toggle('PrestoClient.__getvarsfromresponse');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#__getvarsfromresponse">__getvarsfromresponse</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.__getvarsfromresponse-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.__getvarsfromresponse-expanded"><a name="L414"></a><tt class="py-lineno">414</tt>  <tt class="py-line">        <tt class="py-docstring">""" Internal function, retrieves some information from the response of the Presto server. Keep</tt> </tt>
<a name="L415"></a><tt class="py-lineno">415</tt>  <tt class="py-line"><tt class="py-docstring">        the last known values, except for 'nextUri'.</tt> </tt>
<a name="L416"></a><tt class="py-lineno">416</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L417"></a><tt class="py-lineno">417</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L418"></a><tt class="py-lineno">418</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">"infoUri"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-103" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-103', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L419"></a><tt class="py-lineno">419</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-104" class="py-name"><a title="prestoclient.PrestoClient.__lastinfouri" class="py-name" href="#" onclick="return doclink('link-104', '__lastinfouri', 'link-17');">__lastinfouri</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-105" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-105', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"infoUri"</tt><tt class="py-op">]</tt> </tt>
<a name="L420"></a><tt class="py-lineno">420</tt>  <tt class="py-line"> </tt>
<a name="L421"></a><tt class="py-lineno">421</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">"nextUri"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-106" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-106', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L422"></a><tt class="py-lineno">422</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-107" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-107', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-108" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-108', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"nextUri"</tt><tt class="py-op">]</tt> </tt>
<a name="L423"></a><tt class="py-lineno">423</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L424"></a><tt class="py-lineno">424</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-109" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-109', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L425"></a><tt class="py-lineno">425</tt>  <tt class="py-line"> </tt>
<a name="L426"></a><tt class="py-lineno">426</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">"partialCancelUri"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-110" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-110', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L427"></a><tt class="py-lineno">427</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-111" class="py-name"><a title="prestoclient.PrestoClient.__lastcanceluri" class="py-name" href="#" onclick="return doclink('link-111', '__lastcanceluri', 'link-19');">__lastcanceluri</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-112" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-112', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"partialCancelUri"</tt><tt class="py-op">]</tt> </tt>
<a name="L428"></a><tt class="py-lineno">428</tt>  <tt class="py-line"> </tt>
<a name="L429"></a><tt class="py-lineno">429</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">"state"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-113" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-113', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L430"></a><tt class="py-lineno">430</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-114" class="py-name"><a title="prestoclient.PrestoClient.__laststate" class="py-name" href="#" onclick="return doclink('link-114', '__laststate', 'link-20');">__laststate</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-115" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-115', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"state"</tt><tt class="py-op">]</tt> </tt>
<a name="L431"></a><tt class="py-lineno">431</tt>  <tt class="py-line">        <tt class="py-keyword">elif</tt> <tt class="py-string">"stats"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-116" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-116', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L432"></a><tt class="py-lineno">432</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-string">"state"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-117" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-117', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"stats"</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L433"></a><tt class="py-lineno">433</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-118" class="py-name"><a title="prestoclient.PrestoClient.__laststate" class="py-name" href="#" onclick="return doclink('link-118', '__laststate', 'link-20');">__laststate</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-119" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-119', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"stats"</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-string">"state"</tt><tt class="py-op">]</tt> </tt>
<a name="L434"></a><tt class="py-lineno">434</tt>  <tt class="py-line"> </tt>
<a name="L435"></a><tt class="py-lineno">435</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-120" class="py-name"><a title="prestoclient.PrestoClient.__columns" class="py-name" href="#" onclick="return doclink('link-120', '__columns', 'link-24');">__columns</a></tt><tt class="py-op">:</tt> </tt>
<a name="L436"></a><tt class="py-lineno">436</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-string">"columns"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-121" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-121', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L437"></a><tt class="py-lineno">437</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-122" class="py-name"><a title="prestoclient.PrestoClient.__columns" class="py-name" href="#" onclick="return doclink('link-122', '__columns', 'link-24');">__columns</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-123" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-123', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"columns"</tt><tt class="py-op">]</tt> </tt>
<a name="L438"></a><tt class="py-lineno">438</tt>  <tt class="py-line"> </tt>
<a name="L439"></a><tt class="py-lineno">439</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-string">"data"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-124" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-124', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L440"></a><tt class="py-lineno">440</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-125" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-125', '__data', 'link-25');">__data</a></tt><tt class="py-op">:</tt> </tt>
<a name="L441"></a><tt class="py-lineno">441</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-126" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-126', '__data', 'link-25');">__data</a></tt><tt class="py-op">.</tt><tt class="py-name">extend</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-127" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-127', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"data"</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L442"></a><tt class="py-lineno">442</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L443"></a><tt class="py-lineno">443</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-128" class="py-name"><a title="prestoclient.PrestoClient.__data" class="py-name" href="#" onclick="return doclink('link-128', '__data', 'link-25');">__data</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-129" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-129', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"data"</tt><tt class="py-op">]</tt> </tt>
<a name="L444"></a><tt class="py-lineno">444</tt>  <tt class="py-line"> </tt>
<a name="L445"></a><tt class="py-lineno">445</tt>  <tt class="py-line">        <tt class="py-comment"># Determine state</tt> </tt>
<a name="L446"></a><tt class="py-lineno">446</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-130" class="py-name"><a title="prestoclient.PrestoClient.__lastnexturi" class="py-name" href="#" onclick="return doclink('link-130', '__lastnexturi', 'link-18');">__lastnexturi</a></tt> <tt class="py-op">!=</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L447"></a><tt class="py-lineno">447</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-131" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-131', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"RUNNING"</tt> </tt>
<a name="L448"></a><tt class="py-lineno">448</tt>  <tt class="py-line">        <tt class="py-keyword">elif</tt> <tt class="py-string">"error"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-132" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-132', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">:</tt> </tt>
<a name="L449"></a><tt class="py-lineno">449</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-133" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-133', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"FAILED"</tt> </tt>
<a name="L450"></a><tt class="py-lineno">450</tt>  <tt class="py-line"> </tt>
<a name="L451"></a><tt class="py-lineno">451</tt>  <tt class="py-line">            <tt class="py-comment"># Get errormessage</tt> </tt>
<a name="L452"></a><tt class="py-lineno">452</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-string">"failureInfo"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-134" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-134', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"error"</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L453"></a><tt class="py-lineno">453</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-string">"message"</tt> <tt class="py-keyword">in</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-135" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-135', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"error"</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-string">"failureInfo"</tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L454"></a><tt class="py-lineno">454</tt>  <tt class="py-line">                    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-136" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-136', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-137" class="py-name"><a title="prestoclient.PrestoClient.__lastresponse" class="py-name" href="#" onclick="return doclink('link-137', '__lastresponse', 'link-23');">__lastresponse</a></tt><tt class="py-op">[</tt><tt class="py-string">"error"</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-string">"failureInfo"</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-string">"message"</tt><tt class="py-op">]</tt> </tt>
<a name="L455"></a><tt class="py-lineno">455</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L456"></a><tt class="py-lineno">456</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-138" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-138', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"SUCCEEDED"</tt> </tt>
<a name="L457"></a><tt class="py-lineno">457</tt>  <tt class="py-line"> </tt>
<a name="L458"></a><tt class="py-lineno">458</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> </tt>
</div><a name="L459"></a><tt class="py-lineno">459</tt>  <tt class="py-line"> </tt>
<a name="PrestoClient.__cancel"></a><div id="PrestoClient.__cancel-def"><a name="L460"></a><tt class="py-lineno">460</tt> <a class="py-toggle" href="#" id="PrestoClient.__cancel-toggle" onclick="return toggle('PrestoClient.__cancel');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="prestoclient.PrestoClient-class.html#__cancel">__cancel</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="PrestoClient.__cancel-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="PrestoClient.__cancel-expanded"><a name="L461"></a><tt class="py-lineno">461</tt>  <tt class="py-line">        <tt class="py-docstring">""" Internal function, sends a cancel request to the Prestoserver. """</tt> </tt>
<a name="L462"></a><tt class="py-lineno">462</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-139" class="py-name"><a title="prestoclient.PrestoClient.__lastcanceluri" class="py-name" href="#" onclick="return doclink('link-139', '__lastcanceluri', 'link-19');">__lastcanceluri</a></tt> <tt class="py-op">==</tt> <tt class="py-string">""</tt><tt class="py-op">:</tt> </tt>
<a name="L463"></a><tt class="py-lineno">463</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L464"></a><tt class="py-lineno">464</tt>  <tt class="py-line"> </tt>
<a name="L465"></a><tt class="py-lineno">465</tt>  <tt class="py-line">        <tt class="py-name">headers</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-string">"X-Presto-Source"</tt><tt class="py-op">:</tt>  <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-140" class="py-name"><a title="prestoclient.PrestoClient.__source" class="py-name" href="#" onclick="return doclink('link-140', '__source', 'link-0');">__source</a></tt><tt class="py-op">,</tt> </tt>
<a name="L466"></a><tt class="py-lineno">466</tt>  <tt class="py-line">                   <tt class="py-string">"User-Agent"</tt><tt class="py-op">:</tt>       <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-141" class="py-name"><a title="prestoclient.PrestoClient.__useragent" class="py-name" href="#" onclick="return doclink('link-141', '__useragent', 'link-2');">__useragent</a></tt><tt class="py-op">,</tt> </tt>
<a name="L467"></a><tt class="py-lineno">467</tt>  <tt class="py-line">                   <tt class="py-string">"X-Presto-User"</tt><tt class="py-op">:</tt>    <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-142" class="py-name"><a title="prestoclient.PrestoClient.__user" class="py-name" href="#" onclick="return doclink('link-142', '__user', 'link-13');">__user</a></tt><tt class="py-op">}</tt> </tt>
<a name="L468"></a><tt class="py-lineno">468</tt>  <tt class="py-line"> </tt>
<a name="L469"></a><tt class="py-lineno">469</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-143" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-143', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">""</tt> </tt>
<a name="L470"></a><tt class="py-lineno">470</tt>  <tt class="py-line"> </tt>
<a name="L471"></a><tt class="py-lineno">471</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L472"></a><tt class="py-lineno">472</tt>  <tt class="py-line">            <tt class="py-name">conn</tt> <tt class="py-op">=</tt> <tt class="py-name">httplib</tt><tt class="py-op">.</tt><tt class="py-name">HTTPConnection</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-144" class="py-name"><a title="prestoclient.PrestoClient.__server" class="py-name" href="#" onclick="return doclink('link-144', '__server', 'link-10');">__server</a></tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-145" class="py-name"><a title="prestoclient.PrestoClient.__port" class="py-name" href="#" onclick="return doclink('link-145', '__port', 'link-11');">__port</a></tt><tt class="py-op">,</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-146" class="py-name"><a title="prestoclient.PrestoClient.__urltimeout" class="py-name" href="#" onclick="return doclink('link-146', '__urltimeout', 'link-5');">__urltimeout</a></tt><tt class="py-op">)</tt> </tt>
<a name="L473"></a><tt class="py-lineno">473</tt>  <tt class="py-line">            <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">request</tt><tt class="py-op">(</tt><tt class="py-string">"DELETE"</tt><tt class="py-op">,</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-147" class="py-name"><a title="prestoclient.PrestoClient.__lastcanceluri" class="py-name" href="#" onclick="return doclink('link-147', '__lastcanceluri', 'link-19');">__lastcanceluri</a></tt><tt class="py-op">,</tt> <tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-name">headers</tt><tt class="py-op">)</tt> </tt>
<a name="L474"></a><tt class="py-lineno">474</tt>  <tt class="py-line">            <tt class="py-name">response</tt> <tt class="py-op">=</tt> <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">getresponse</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L475"></a><tt class="py-lineno">475</tt>  <tt class="py-line"> </tt>
<a name="L476"></a><tt class="py-lineno">476</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">status</tt> <tt class="py-op">!=</tt> <tt class="py-number">204</tt><tt class="py-op">:</tt> </tt>
<a name="L477"></a><tt class="py-lineno">477</tt>  <tt class="py-line">                <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-148" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-148', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Connection error: "</tt> <tt class="py-op">+</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">status</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-string">" "</tt> <tt class="py-op">+</tt> <tt class="py-name">response</tt><tt class="py-op">.</tt><tt class="py-name">reason</tt> </tt>
<a name="L478"></a><tt class="py-lineno">478</tt>  <tt class="py-line">                <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L479"></a><tt class="py-lineno">479</tt>  <tt class="py-line">                <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L480"></a><tt class="py-lineno">480</tt>  <tt class="py-line"> </tt>
<a name="L481"></a><tt class="py-lineno">481</tt>  <tt class="py-line">            <tt class="py-name">conn</tt><tt class="py-op">.</tt><tt class="py-name">close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L482"></a><tt class="py-lineno">482</tt>  <tt class="py-line"> </tt>
<a name="L483"></a><tt class="py-lineno">483</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt> <tt class="py-name">httplib</tt><tt class="py-op">.</tt><tt class="py-name">HTTPException</tt><tt class="py-op">:</tt> </tt>
<a name="L484"></a><tt class="py-lineno">484</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-149" class="py-name"><a title="prestoclient.PrestoClient.__lasterror" class="py-name" href="#" onclick="return doclink('link-149', '__lasterror', 'link-16');">__lasterror</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"Connection error: "</tt> <tt class="py-op">+</tt> <tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">httplib</tt><tt class="py-op">.</tt><tt class="py-name">HTTPException</tt><tt class="py-op">.</tt><tt class="py-name">message</tt><tt class="py-op">)</tt> </tt>
<a name="L485"></a><tt class="py-lineno">485</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">False</tt> </tt>
<a name="L486"></a><tt class="py-lineno">486</tt>  <tt class="py-line"> </tt>
<a name="L487"></a><tt class="py-lineno">487</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L488"></a><tt class="py-lineno">488</tt>  <tt class="py-line">            <tt class="py-keyword">pass</tt> </tt>
<a name="L489"></a><tt class="py-lineno">489</tt>  <tt class="py-line"> </tt>
<a name="L490"></a><tt class="py-lineno">490</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-150" class="py-name"><a title="prestoclient.PrestoClient.__clientstatus" class="py-name" href="#" onclick="return doclink('link-150', '__clientstatus', 'link-21');">__clientstatus</a></tt> <tt class="py-op">=</tt> <tt class="py-string">"NONE"</tt> </tt>
<a name="L491"></a><tt class="py-lineno">491</tt>  <tt class="py-line"> </tt>
<a name="L492"></a><tt class="py-lineno">492</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">True</tt> </tt>
</div></div><a name="L493"></a><tt class="py-lineno">493</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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